参数资料
型号: TDA21301
厂商: Infineon Technologies
文件页数: 14/25页
文件大小: 0K
描述: IC CTRLR PWM MULTI CPU TSSOP-28
产品变化通告: Product Discontinuation 30/Jul/2007
标准包装: 2,500
应用: PWM控制器,CPU 内核
输入电压: 4.5 V ~ 5.5 V
输出数: 4
输出电压: 0.8375 V ~ 1.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: P-TSSOP-28
包装: 带卷 (TR)
其它名称: SP000013699
TDA21301T
Proportional Current Setting
Z CSP
sC CSP =
R CSP2 + 1
Z CSP =
R CSP2 × 1
sC CSP
R CSP2
sR CSP2 C CSP + 1
V CCSP (s)=V L (s)×
Z CSP
R CSP1 +Z CSP
=V L (s)×
1
R CSP1
Z CSP
+1
=V L (s)× =V L (s)×
+1 (sR CSP2 C CSP + 1 )+1
1 1
R CSP1 R CSP1
R CSP2 R CSP2
sR CSP2 C CSP + 1
=V L (s)× = I L (s) ×
R CSP2
sR CSP1 R CSP2 C CSP + R CSP1 +R CSP2
( sL+DCR)R CSP2
sR CSP1 R CSP2 C CSP + R CSP1 +R CSP2
( sL+DCR)
+1
=I L (s)×
R CSP2
R CSP1 +R CSP2
sR CSP1 R CSP2 C CSP
R CSP1 +R CSP2
= , then V CCSP (s)=I L (s)×DCR ×
If
L R CSP1 R CSP2 C CSP
DCR R CSP1 +R CSP2
R CSP2
R CSP1 +R CSP2
With this technique, it is very easy to program the current ratio at each channel for achieving the current
balance.
Voltage Hump Elimination
V CSP = V CORE + I L × DCR and V CSN = I CNS × R CSN + V CORE
Q V CSN = V CSP , ∴ I CNS =
I L × DCR
R CSN
I X =
Ix
V CSP
V CSN
I CSN
V CSN
R CSN2
I P E A K
+
I L × DCR
R CSN
0 A
? I
I v a l l e y
During the light load condition, the CoreControl converter is still working in the CCM but the valley of the
inductor current is below 0A. This means that the inductor current is flowing from Vcore to PHASE and
the voltage across on the C CSP is reversed polarity. Now the GM amplifier should sink current but it is
lack of the sinking current capability. A hump been observed on the load line at light load condition. In
CoreControl TM
Page 14 of 25
DS-CoreControl-TDA21301
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